1. Commonly found at the end of software release announcements and
README files, this phrase indicates allegiance to
the hacker ethic of free information sharing (see
hacker ethic, sense 1).

2. The motto of the complaints division of Sirius Cybernetics
Corporation (the ultimate gaggle of incompetent
suits) in Douglas Adams's Hitch Hiker's
Guide to the Galaxy. The irony of using this as a cultural
recognition signal appeals to hackers.